Skip to Main Content
Operational experiences with Bt in the Eastern United StatesAuthor(s): Henry, Jr. Trial
Source: In: Grimble, David G.; Lewis, Franklin B., coords. Proceedings, Symposium: Microbial control of spruce budworms and gypsy moths; 1984 April 10-12; Windsor Locks, CT. Gen. Tech. Rep. NE-100. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7-12
Publication Series: General Technical Report (GTR)
Station: Northeastern Research Station
PDF: View PDF (430.33 KB)
DescriptionBacillus thuringiensis (B. t.) has been used operationally in the eastern U. S. since 1978 with most applications occurring in Maine. Changes in B. t. dosage rates, volume, cost, spray aircraft, and use patterns will be discussed. Evaluation of B. t. dosage in the east has consisted of variable results with 8 B.I.U. treatments in 1978 through 1980, to consistently good results with 12 B.I.U.'s for 1981 t o 1983. Application technology has changed from high volumes in 1979 to undiluted or neat applications in 1983. Spray delivery systems have changed from boom and nozzle equipped small helicopters to small fixed-wing aircraft equipped with rotary atomizers. Improved efficacy has significantly broadened the B. t. use pattern.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationTrial, Henry, Jr. 1985. Operational experiences with Bt in the Eastern United States. In: Grimble, David G.; Lewis, Franklin B., coords. Proceedings, Symposium: Microbial control of spruce budworms and gypsy moths; 1984 April 10-12; Windsor Locks, CT. Gen. Tech. Rep. NE-100. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7-12
- Recent field research using microbial insecticides against gypsy moth
- Application of phosphonate to prevent sudden oak death in south-western Oregon tanoak (Notholithocarpus densiflorus) forests
- Portable tripod-mounted boom sprayer for applying herbicides on tall shrubs
XML: View XML